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Finding the Fourth Proportional to 308,057.78, 424,843.45 and 256,545.43

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Solution

The fourth proportional to 308,057.78, 424,843.45 and 256,545.43 is: 353,802.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,057.78 : 424,843.45 = 256,545.43 : x
  2. Step 2: Convert to fraction form
    308,057.78/424,843.45 = 256,545.43/x
  3. Step 3: Cross multiply
    308,057.78x = 424,843.45 × 256,545.43
  4. Step 4: Simplify right side
    308,057.78x = 108,991,643,859.46
  5. Step 5: Solve for x
    x = 108,991,643,859.46/308,057.78
  6. Step 6: Final answer
    x = 353,802.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.